baker



3 Sheets-'-Sheet 1.

(No Model.)

I. L. BAKER. TUBE MACHINE.

Pat embed Apr. '7, 1896.

\NVENT R- ANDREW RGRAHANL PHOTO-UTNUVWASHIN crow. n cy (No Model.) 3Sheets--Sheet 2.

F. L. BAKER.

TUBE MACHINE.

AN DRE! 8 GRAHAMv PHDTO-IJI'KQWASHINGIOKDL.

3 e e h s .w e e h S 3 R E K A B L F q d 0 M O m TUBE MAGHINE.

gatented Apr. 7, 1896.

IN vE NTOR. WL,GMGM

WITNESSES. v

ANDREW IGHMIAM.PNDTD-LWNQWASHUIGIUNDJI UNITED STATES PATENT OFFICE.

FRANK L. BAKER, OF XVILHINGTON, DELAVARE, ASSIGNOR TO THE DIAMOND PAPERBAG COMPANY, OF SAME PLACE.

TUBE-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 557,636, dated April'7, 1896.

Application filed April 5,1894- Serial No. 506,490. (No model.)

To all whom, it may concern:

Be it known that I, FRANK L. BAKER, a citizen of the United States,residing in Vilmington, New Castle county, Delaware, have inventedcertain new and useful Improvements in Tu be-Wlachines, of which thefollowing is a specification.

My invention relates to tube-machines, and more especially to a machineadapted to make a double tube-that is, one tube within and embraced bythe other-and while it is applicable to making tubes from variousmaterials it is especially designed for the manufacture of paper tubes;and it has for its object to provide means whereby a continuous doubletube having the scams or points-of union on reverse sides may be quicklyand readily formed, and the tube may be coated with any suitablematerial and delivered in a finished state, complete and perfect in formand construction and of desirable lengths; and to these ends myinvention consists in the various features of construction andarrangement of parts having the mode of operation substantially ashereinafter more particularly pointed out.

Referring to the accompanying drawings, wherein I have illustrated onepreferred embodiment of my invention, Figures 1 and 1 are side views,partly in section, of a complete machine or apparatus for forming,coating, and delivering the tubes. Figs. 2 and 2 are plan views of themachine. Fig. 3 is an enlarged side view, partly in section, of thecoating apparatus, as well as the adjunctive devices; and Fig. 4 is anenlarged plan view of the tube-forming devices.

One of the main objects of my present invention is to provide a machinewhereby the material forming the two tubes, the one within the other,may be simultaneously fed into the machine, folded into tube form, theone over the other, so that the seams of the tubes shall be oppositeeach other, and after the tubes are formed and pressed together to drythe same, coat the tube with a suitable waterproof or other coating, anddeliver the same in proper lengths, and in doing this I provide twotubefor1ning devices and arrange them in reverse relation to each other,and also arrange all the parts of the machine so that as the tube passesthrough it is kept under continual pressure in order to prevent airgetting into the tube, which has the effect of distortin g the tube andcausing it to be delivered out of proper shape and possibly with openings and leaks, which render it unsatisfactory in use.

The main purpose of my invention is to provide blasting-tubes; but ofcourse it will be understood that the tubes may be used for any purposefor which they are adapted, and while I have shown and described amachine for making a double tube it will be understood that the sameprinciples apply and extend to make a tube of more than two thick-JIGSSQS.

Referring now to the drawings, 1 and 2 represent rolls supplying paperor other material to the machine, and this paper may be suit ablytreated to render it water or fire proof, or otherwise, and I generallyprefer to supply the paper from roll 1 in this condition. These rollsare mounted on suitable bearings on an arm or support l, connected tothe uprights or supports 3 of the machine, and the paper from the roll 2passes over a guide-roll 5,-

thence over a roll 6, and paste is supplied to the paper from thepaste-vat 7 by a roller 8, which is adjustable by a screw 9, or othersimilar pasting apparatus, and the paper is led forward to the former.The paper from the roll 1 passes over a similar guide 10, a roller 1],the paper receiving paste from the roll 13 in the vat l2 and adjustableby a screw 14, and thence to its former. These tubeformers 15 and 18 maybe of any suitable construction, and the former 15 is shown as mountedon the arms 26, projecting from the standards 3 and is arranged with itsheel or bending face upward, so that the edges of the paper arenaturally drawn downward and inward and folded over each other in awellknown way to form the tube, and the tube is led downward under theformer 18, between it and the paper from the roll 2.

The former 18 is arranged with its heel or bending face downward, sothat the edges of the paper will be turned up over the former and overand inclosing the first tube, and I have shown the former as supportedby a link 17 from the standard 3.

Any suitable adj unctive devices to aid in folding over the edges of thepaper to form the tube may be usedas, for instance, the fingers orguides 19, the gravity-pressure rolls 19, the fingers 19 and 19, thepressure or guide rolls 19 and the supporting roller 21, although anyother well known and equivalent devices for forming and completing thetube may be usedthe essential feature of my invention in this regardbeing that the tube-forming devices are arranged in reverse relation toeach otherthat is to say, the paper forming one tube will be foldeddownward around and over the formerhaving its seam on the under side,and then be fed forward under the next tube-forming device, where it isinclosed by the paper forming the other tube, which paper is foldedupward and over the second former so as to inclose the first tube, andto have its seam on the upper side of the tube, or 011 the reverse sideto that of the first tube.

In the present instance the second tubeforming adjuncts are shown asmounted on a platform 20, which'has an additional support 22, bearing onor connected to the frame of the heating and drying apparatus, althoughthis, of course, is not an essential feature of construction, and otherequivalent arrangements may be used.

As before intimated, it is very essen tial that the double tube shouldbe kept under constant pressure from the time it is formed until it isdelivered in its completed state to prevent the air from getting intothe tube and causing bulges or irregularities in the shape or evendisrupting the tube, which is likely to occur as it is fed through theapparatus, and coated and formed into suitable lengths, and I have showna drying apparatus as well as a coating apparatus connected to thetubeforming devices in such a manner that all parts of the tube arealways under continuous pressure as it passes through the machine. Thusthe drying apparatus which is mounted on the frame 25 is provided withstandards 24, upon which is mounted a roller 23 which is adapted to beadjusted with relation to the tube-forming devices, so that the momentthe tubes are formed and pass from the final former the tube is understress or strain over the periphery of the roller 23. This roller isarranged to bear upon the periphery of a drying-roll A, there being aseries of rolls A A A &c., and intermediate connecting-rolls B B Thesedrying-rolls may be suitably heated, as by steam-pipes 27 28, connectedwith a suitable source of supply, and they are driven at a uniform rateof speed by the gears 29 31 33 and the intermediate gears and suitablymounted on studs or bearings 3i 35 supported on the frame of themachine. The intermediate rolls B B are mounted in bearings 36 37 on anelevated portion of the frame 39, supported by suitable standards 33from the main frame 25. It will be noticed that these drying-rolls orcylinders are arranged so that the tube is at all times under pressure,bearing either upon the face of the cylinders A A or the intermediaterolls B B and leaving the face of one for that of the other at a pointof contact between the rolls, so that under no circumstances can air getinto the tube as it is passing through the machine. It is taken from thefinal roll or cylinder A over a roll 40, which is arranged to bear uponthe periphery of the cylinder A and thence is passed through the coatingapparatus, where it is still under pressure, the rolls 41 42 beingarranged to convey the tube from the roll to the submerging-roll orpulley 4:3, while the roll it bears against the rolls 43 and 45, and thelatter bears on roll 46, thus keeping the tube under pressure untilfinally coated.

The submerging-roll or pulley 43 is preferably provided with flanges onit edges, as best seen in Fig. 2, and its surface is provided with holesor openings a to permit the material in the vat to flow through thepulley and to cover the face of the tube, which is held. in contact withthe face of the pulley while the other face is being coated by thematerial in the vat. This pulley or submerging-roll, having a perforatedface or periphery, is one of the essential features of my invention, asit will be seen that the tube is held in contact with the face of thepulley in order to carry out the idea of preserving it under pressurecontinuously, and it is necessary that the coating material should beapplied through the orifices or perforations in the periphery of thepulley to one side of the tube.

The roll H is supported on a rock-arm 81, which in turn is supported inbrackets 82, the roll being under spring-tension, as by a spring 81,causing it to bear 011 the pulley i3 and one of the drawing or feedingrolls i5, the rolls 45 and 46 acting as the drawing or feeding rolls forthe apparatus and keeping the tube under continuous tension from thetime it is formed until it is completed, dried, and coated. It thenremains simply to sever the tube into proper lengths, and while, asbefore stated, it maybe made in various forms, I have shown anarrangement for severing it into lengths, say, of twelve feet, suitablefor blasting-cartridges, and as the tube leaves the feed-rolls i5 and 46it passes over the roller 67 and between the tension-roll 68, mounted inbearings 69 on the arm '70 and adjustable by a screw 71, and thence itpasses between the guides 66 to the cutters 6i and 65, the latter ofwhich is shown as stationary, while the former rotates at intervalsthrough any suitable mechanism.

Vhile various means may be used for accomplishing the resultshereinbefore pointed out, in the present instance I arrange that 35shall be the dri veshaft, providing it with any suitable means ofpropulsion, and this by means of the gears 32 and the connected gearsoperates the cylinders of the drying-machine. The feed-rolls $5 46 aredriven from this shaft by a sprocket-chain 80, connected to asprocket-wheel 85, mounted on the shaft of the roll 46, and also mountedon this shaft is a pinion 87, connecting with the pinion 86 on the shaftof the feedagoll as, so that the feedrolls rotate in oppositedirections. Also mounted on the shaft is a pulley 88, connected by abelt to a pulley 89 on the shaft of the roll 67, so that this roll isdriven in unison and proper time with relation to the feedrolls.

In order to operate the cutting mechanism at the proper time, I haveshown a pinion 53, mounted on the shaft of the feed-rollafi, meshingwith a pinion 55, which is mounted on a short shaft carrying a sprocket-wheel 5%, which is connected by a suitable chain to a similarsprocket-wheel 76 loosely mounted on the shaft 100, and connected to thesprocketwheel 76 is one portion, 7 5, of a clutch mechanism, while theother portion, 83, is loosely mounted on the shaft, and these twoportions carry clutch devices 91 92, bymeans of which they may beengaged. The portion 83 of the clutch is keyed to the shaft 100, so thatwhen it rotates the shaft will rotate with it, but it can be movedlongitudinally of the shaft, and when the clutches are engaged the shaft100 will rotate, carrying with it the cutter 6i, severing the tubebetween the said cutter and the fixed cutter 65. The shaft 100 is alsoprovided at its end with a disk 7 3, having a notch in its periphery, inwhich normallyrests afriction-roll 77, supported on a lever 7 2, pivotedat 7t and provided with a spring 78 secured to an abutment 7 9, thepurpose of which is to insure the stopping of the shaft 100 at a properposition, so that the cutters will be in proper relation to one another.

In order to operate the clutch portion 83, I provide a band 61, which ispivotally connected to an arm or lever 57,pivotallymounted on a bearing58 and normally under stress of a spring to maintain the clutch portionsseparated, and preferably carrying on its end a friction-roller 60,projecting in relation to a cam-wheel 47, provided on its face with acam 8;. This cam-wheel is connected to a pinion 7L8, which is driven bya pinion 50, which in turn is driven by a pinion 49 on the sameshaft,meshing with pinion 52,connected to be driven by the pinion 55,and the connections are so proportioned that when the feed-rolls a5 and46 have fed a sufficient length of the tube forward the cam 84 will comein contact with the friction-roll and operate the lever 57 to cause theclutch parts to become engaged and rotate the cutter to sever the tubelength-desired, and it will be understood, of course, that by changingthe relations of this intermediate train of gears various lengths oftube can be severed, as desired.

It will thus be seen that with my apparatus two or more webs of paper orother material can be simultaneously fed into the machine and to theformers, which latter are arranged with reverse relation to each other,so that the tube of one web will be folded over and under the former tomake the one tube, and the other web will be forward and overthe nextformer and inclose therein the first tube, so that the seams of the twotubes will come opposite each other and when the paper leaves theformer, going to the drying apparatus, it is always under tension andpressure, being drawn forward by the feed-rolls 45 46 through the dryingapparatus and through the coating apparatus, the latter being soconnected and arranged that the tube is still under pressure, and thepulley or submerging-roll being perforated on its periphery to allow thecoating to be applied to the side of the tube bearing on its periphery,while the outer portion is being coated from the fluid in the vat andpreventing any danger of air getting into the tube to disrupt it todistort it. From this port-ion the tube may be fed and delivered in anydesired manner, and, if necessary, it can be delivered to the cuttingapparatus and severed into lengths of any desired size.

lVhat I claim is-- 1. In a double-tube-forming machine, the combinationwith a former over which a strip of paper is formed into a tube, of asecond 7 former under which the tube of the first former passes andaround which another strip of paper is formed into a tube inclosing thefirst tube, the two tube-formers being reversely arranged with relationto each other and separate and independent of each other, substantiallyas described.

2. In a double-tube-forming machine, the combination with thetube-formers reversely arranged with relation to each other, of thedrying-rolls arranged to receive the double tube from the formers and tomaintain it constantly under pressure, a coating apparatus connected tothe drying apparatus to also receive and maintain the tube constantlyunder pressure, and tension-rolls for positively drawing the tubethrough the coating, drying and tube forming mechanism and maintainingit under tension or pressure throughout the operation, substantially asdescribed.

3. In a double-tube-forming machine, the combination with twotube-formers reversely arranged with relation to each other, of thedrying-cylinders, a roll, as 23, to receive the tube from the formersand hold it in contact with the drying-cylinders, the coating apparatus,a roll, as 40, to guide the tube from the drying to the coatingapparatus, the coating apparatus being provided with a submerged 1-011having a perforated periphery, the drawing-rolls arranged to draw thetube positively through the tube-forming, drying and coating apparatusunder pressure, and a cutter for severing the tube, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK L. BAKER.

\Vitnesses GEORGE CARTER, WILBUR L. SASSE.

